George created HBASE-27057:
------------------------------

             Summary: Issue with ZooKeeper configuration on CDP5
                 Key: HBASE-27057
                 URL: https://issues.apache.org/jira/browse/HBASE-27057
             Project: HBase
          Issue Type: Task
         Environment: Cloudera 5 with Kerberos / HBase
            Reporter: George


Hello everyone, I am new here and in HBase as well, so sorry for my lack of 
knowledge, I tried to read but the documentation and the environment that I got 
as a test are confusing me. The explanation is here, I have got Cloudera 5 with 
Hbase with Kerberos, 2 master nodes, and 3 worker nodes on Ubuntu machines, we 
have to connect DataStore with special application with checks krb5.conf file 
and keytab after authentication goes and connect to DS and check the tables the 
metadata there. When I am trying to push the application to connect the master 
node zookeeper is failing, when I am trying to connect zookeper node from the 
same application I can scan and do what I need, but every time the connection 
goes to 2181 localhost, how to check where is the issue of configuration that 
masters done will give me access to the data stores?

 

Here is log from master node: 

[2022-05-22 12:26:31.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
[2022-05-22 12:26:31.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 1000ms before 
retry #0...
[2022-05-22 12:26:31.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
[2022-05-22 12:26:31.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 2000ms before 
retry #1...
[2022-05-22 12:26:31.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
[2022-05-22 12:26:31.676Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- ZooKeeper 
exists failed after 2 attempts
[2022-05-22 12:26:31.677Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.ZKUtil  [MasterNode]- 
hconnection-0x46acd8780x0, quorum=10.2.0.30:2181, baseZNode=/hbase Unable to 
set watcher on znode (/hbase/hbaseid)
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase/hbaseid
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
    at 
org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:86)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:833)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:623)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
 Method)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
 Source)
    at 
java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
 Source)
    at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:60)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)

[2022-05-22 12:26:31.678Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher  [MasterNode]- 
hconnection-0x46acd8780x0, quorum=10.2.0.30:2181, baseZNode=/hbase Received 
unexpected KeeperException, re-throwing exception
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase/hbaseid
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
    at 
org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:86)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:833)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:623)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
 Method)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
 Source)
    at 
java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
 Source)
    at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:60)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)

[2022-05-22 12:26:31.678Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.client.ZooKeeperRegistry  [MasterNode]- Can't retrieve 
clusterId from Zookeeper
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase/hbaseid
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
    at 
org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:86)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:833)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:623)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
 Method)
    at 
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
 Source)
    at 
java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
 Source)
    at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
    at 
org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:60)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)

[2022-05-22 12:26:36.337Z] [INFO] scanner_file - 
7a342cd4-cd4f-4a08-ab9f-8214b4f62f09 [poolScheduler-2] 
com.bigid.scanner.scannerboot.common.services.context.threads.ThreadPoolUpdatesService
 - Fetching thread pool updates
[2022-05-22 12:26:41.675Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 1000ms before 
retry #0...
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 2000ms before 
retry #1...
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- ZooKeeper 
exists failed after 2 attempts
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.ZKUtil  [MasterNode]- 
hconnection-0x46acd8780x0, quorum=10.2.0.30:2181, baseZNode=/hbase Unable to 
set watcher on znode (/hbase)
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.checkIfBaseNodeAvailable(ConnectionManager.java:849)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.access$400(ConnectionManager.java:535)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStubNoRetries(ConnectionManager.java:1435)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1476)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionManager.java:1505)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveMasterService(ConnectionManager.java:1711)
    at 
org.apache.hadoop.hbase.client.MasterCallable.prepare(MasterCallable.java:38)
    at 
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:124)
    at 
org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3601)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:312)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:296)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:62)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)

[2022-05-22 12:26:41.676Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher  [MasterNode]- 
hconnection-0x46acd8780x0, quorum=10.2.0.30:2181, baseZNode=/hbase Received 
unexpected KeeperException, re-throwing exception
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.checkIfBaseNodeAvailable(ConnectionManager.java:849)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.access$400(ConnectionManager.java:535)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStubNoRetries(ConnectionManager.java:1435)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1476)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionManager.java:1505)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveMasterService(ConnectionManager.java:1711)
    at 
org.apache.hadoop.hbase.client.MasterCallable.prepare(MasterCallable.java:38)
    at 
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:124)
    at 
org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3601)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:312)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:296)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:62)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)

[2022-05-22 12:26:41.676Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation  
[MasterNode]- Can't get connection to ZooKeeper: KeeperErrorCode = 
ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 1000ms before 
retry #0...
[2022-05-22 12:26:41.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [poolScheduler-7] 
com.bigid.scanner.scannerboot.common.services.context.threads.ThreadPoolUpdatesService
 - Fetching thread pool updates
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [INFO] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.util.RetryCounter  [MasterNode]- Sleeping 2000ms before 
retry #1...
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- Possibly 
transient ZooKeeper, quorum=10.2.0.30:2181, 
exception=org.apache.zookeeper.KeeperException$ConnectionLossException: 
KeeperErrorCode = ConnectionLoss for /hbase
[2022-05-22 12:26:41.676Z] [ERROR] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper  [MasterNode]- ZooKeeper 
exists failed after 2 attempts
[2022-05-22 12:26:41.676Z] [WARN] scanner_file - 
12750b5c-c00b-4eb9-8ec0-66a710ed822d [Thread-312] 
org.apache.hadoop.hbase.zookeeper.ZKUtil  [MasterNode]- 
hconnection-0x46acd8780x0, quorum=10.2.0.30:2181, baseZNode=/hbase Unable to 
set watcher on znode (/hbase)
 org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode 
= ConnectionLoss for /hbase
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
    at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:222)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:481)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.checkIfBaseNodeAvailable(ConnectionManager.java:849)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.access$400(ConnectionManager.java:535)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStubNoRetries(ConnectionManager.java:1435)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1476)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionManager.java:1505)
    at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveMasterService(ConnectionManager.java:1711)
    at 
org.apache.hadoop.hbase.client.MasterCallable.prepare(MasterCallable.java:38)
    at 
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:124)
    at 
org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3601)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:312)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:296)
    at 
com.bigid.scanner.hbase.HBaseScanner.getDataSourceObjects(HBaseScanner.java:62)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:108)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper$4.run(HadoopUGIConnectorWrapper.java:105)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/javax.security.auth.Subject.doAs(Unknown Source)
    at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    at 
com.bigid.scanner.hadoop.common.HadoopUGIConnectorWrapper.getDataSourceObjects(HadoopUGIConnectorWrapper.java:105)
    at 
com.bigid.scanner.connectors.generic.DataSourceConnectorAdapter.testConnection(DataSourceConnectorAdapter.java:289)
    at 
com.bigid.scanner.core.tasks.legacy.LegacyTestConnectionTask.execute(LegacyTestConnectionTask.java:43)
    at 
com.bigid.scanner.core.TestConnectionTask.execute(TestConnectionTask.java:36)
    at com.bigid.scanner.core.TaskExecution.execute(TaskExecution.java:36)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:57)
    at 
com.bigid.scanner.scannerboot.common.services.TestConnectionService.doService(TestConnectionService.java:20)
    at 
com.bigid.scanner.scannerboot.common.http.managers.TestConnectionSyncManager.lambda$runService$0(TestConnectionSyncManager.java:55)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown 
Source)
    at java.base/java.lang.Thread.run(Unknown Source)



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